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Avoid race conditions updating ledger fee entries

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This commit is contained in:
David Schwartz
2014-01-30 14:28:57 -08:00
committed by Vinnie Falco
parent f7817866ba
commit 02483b2e0b
1 changed files with 25 additions and 14 deletions
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39
src/ripple_app/ledger/Ledger.cpp
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@@ -1947,28 +1947,39 @@ void Ledger::initializeFees ()
void Ledger::updateFees () void Ledger::updateFees ()
{ {
mBaseFee = getConfig ().FEE_DEFAULT; uint64 baseFee = getConfig ().FEE_DEFAULT;
mReferenceFeeUnits = 10; uint32 referenceFeeUnits = 10;
mReserveBase = getConfig ().FEE_ACCOUNT_RESERVE; uint32 reserveBase = getConfig ().FEE_ACCOUNT_RESERVE;
mReserveIncrement = getConfig ().FEE_OWNER_RESERVE; int64 reserveIncrement = getConfig ().FEE_OWNER_RESERVE;
LedgerStateParms p = lepNONE; LedgerStateParms p = lepNONE;
SLE::pointer sle = getASNode (p, Ledger::getLedgerFeeIndex (), ltFEE_SETTINGS); SLE::pointer sle = getASNode (p, Ledger::getLedgerFeeIndex (), ltFEE_SETTINGS);
if (!sle) if (sle)
return; {
if (sle->getFieldIndex (sfBaseFee) != -1)
baseFee = sle->getFieldU64 (sfBaseFee);
if (sle->getFieldIndex (sfBaseFee) != -1) if (sle->getFieldIndex (sfReferenceFeeUnits) != -1)
mBaseFee = sle->getFieldU64 (sfBaseFee); referenceFeeUnits = sle->getFieldU32 (sfReferenceFeeUnits);
if (sle->getFieldIndex (sfReferenceFeeUnits) != -1) if (sle->getFieldIndex (sfReserveBase) != -1)
mReferenceFeeUnits = sle->getFieldU32 (sfReferenceFeeUnits); reserveBase = sle->getFieldU32 (sfReserveBase);
if (sle->getFieldIndex (sfReserveBase) != -1) if (sle->getFieldIndex (sfReserveIncrement) != -1)
mReserveBase = sle->getFieldU32 (sfReserveBase); reserveIncrement = sle->getFieldU32 (sfReserveIncrement);
}
if (sle->getFieldIndex (sfReserveIncrement) != -1) {
mReserveIncrement = sle->getFieldU32 (sfReserveIncrement); StaticScopedLockType sl (sPendingSaveLock, __FILE__, __LINE__);
if (mBaseFee == 0)
{
mBaseFee = baseFee;
mReferenceFeeUnits = referenceFeeUnits;
mReserveBase = reserveBase;
mReserveIncrement = reserveIncrement;
}
}
} }
uint64 Ledger::scaleFeeBase (uint64 fee) uint64 Ledger::scaleFeeBase (uint64 fee)